Valve mechanism for hydraulic transmission.



H. LENTZ. VALVE MECHANISM FOR HYDRAULIC TRANSMISSION. urmu'non mum NOY.26,1810.

1,107,675, Patented Aug. 18, 1914.

2 SHEET8-BEEET 1.

H. LENTZ.

VALVE MECHANISM FOR HYDRAULIC TRANSMISSION. APPLICATION FILED NOV.25,1910.

r'ronmsr having covered the opening 1) and the valve 1) having uncovered the opening 12. Now when the sleeve f is moved still farther to the right, the lowering portion 23 of the groove m so coacts with the pin 1?, that the latter is returned into its initial position, while the portion 5-6 of the guide-way 0 leaves the pin 7: in its last position, so that the position of the parts shown in Fig. 6 consequently corresponds With both valves having uncovered the openings 4; and 0.

My device has the following advantages:Firstly, both valves 6 and d can be actuated by means of one single movement, secondly, the device is perfectly protected from injury, and, thirdly, the valve rods are mutually, and therefore certainly guided.

Obviously the guide-ways may be so arranged that both the valves are simultaneously held in their closed position. Also, the slanting parts of the guide-ways may be interrupted by parallel parts in order to obtain any desired intermediate positions of the valves.

The arrangement is just as suitable when there are more than two rods mounted one within another.

I claim l. The combination, with a plurality of valves, of concentric rods movable-relatively one to another attached thereto, and a guided sleeve surrounding the ends of said rods and having a plurality of guide-ways, each rod having a member engaging in one of the guidewvays.

2. The combination of a hollow revoluble valve-rod having a valve attached to one end thereof, a second valve-rod revoluble in the former valve-rod, a valve attached to one end of the second valve-rod, a guided sleeve provided with two angular guideways surrounding the other ends of said valve-rods, the former valve-rod carrying a pin projecting into one of said guide-ways and a pin on the second valve-rod projecting into the other guide-way, substantially as shown.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

HUGO LENTZ.

Witnesses:

J AKOB KRAUs, LUDWIG PEILERT. 

